Disc insert for a lighting assembly



FIG. 1 is a front view of a disk insert for a lighting assembly showing the new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a left view thereof; and,

FIG. 7 is a perspective view thereof, shown at a smaller scale. 

CLAIM The ornamental design for a disc insert for a lighting assembly, as shown and described. 